Multiple forms of human factor IX in chromatography and isoelectric focusing

Multiple forms of human factor IX in chromatography and isoelectric focusing

Vof* TKROXBOSIS RESEARCH Printed in r;he TVnited Szates YULTIPLE FORMS C H R 3 :::,A,TCSRAPtJY OF Red Helsinki, (Received ABSTRACT IX I?\. ...

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Vof*

TKROXBOSIS RESEARCH Printed in r;he TVnited Szates

YULTIPLE

FORMS

C H R 3 :::,A,TCSRAPtJY

OF

Red

Helsinki,

(Received

ABSTRACT

IX

I?\.

F C C iJ S I r,:C

GFID ISOELECTRIC

Hannu Finnish

HUKA?,; FACTOR

7, pp. 101-112, Pergamon Press,

Suomela

Cross

Blood

Transfusion

Service

Finland

in revised form 11.5.1975. 3.3.1975; Accepted by Editor B. Blombkk)

Factor 600-3000 genecus

IX

concentrate made from a plasma pool of persons was demonstrated to be heteroin DEAE-Sephadex and hydroxyapatite chromatography . Factor IX activity was separated into three main groups and each of these groups was shown to be heterogeneous in isoelectric focusing. Factor IX concentrate made from individual plasma samples was found to be homogeneous when the same techniques were used. Variation between individuals was demonstrated.

INTRODUCTION Differences strated.

in

The

coagulation found variants

has lation

been study

polymorphism Veltkamp

of

al.

normal

least

8

the

patients

heterogeneity

males

that in

not

et

the

confirm 101

al. there levels this

B have

been

both

immunological

four

variants

literature

demonand have

been

concerning

(21. of

Lester

variation could

at

on

reviewed

Hemophilia of

Hemophilia based

and

suggested.

for et

is

recently

in

occurrence

also

of

analysis,

Denson found

The

types

classification time

(I).

the

normal

human

concluded may of result

Factor

from

well

be

Factor in

a pcpugenetic

IX their

(31. twin

IX

1975 Inc.

stories

[.I).

In

‘1?2

Factor

sours=

7s”;)

zf

._loFy-_=ri

IX (F IX) froT pcoled

fepeataaly

fount

CEAE-Sephadex phate)

_

c:

in sevaral

nur-an plasya, sompsnents.

chromatography,

chromatography

per presents

__

F 1. aCt
This ::,a-e

aopsren:

i,n

!salci~~ phosf:-using :51. This pa-

and in isoelectric

from pooled

MATERIAL

-‘,,

in hydroxyaparite

the chromatographic

F IX originating

?.,>_i_-._ _ _ i--z

>.;r:-f;a;
and issele~tric

plasma

and four

properties

of

tndividuala.

AIND METHODS

F IX concentrates a)

The pooled

plasma:

The plasma

pool of about 3000 persons was separated

within

was cryo-supernatant

again,

separated.

and F IX concentrate

from a

plasma,

six hours of the bleeding,

thawed and the cryoprecipitate frozen

for F IX concentrate

frozen

which at -7G°C,

The supernatant

prepared

as described

was earlier

(61. bl

Individual

either

from repeated

The plasmas

The plasmas

plasma:

donations

were stored

ted. F IX concentrate

frozen.

taining

0.2 M phosphate

about 600 ml of plasma transferred

Cryoprecipitate

buffers

gently

onto a Biichner funnel

contained

as fellows:

in G.14 M phosphate-

were diluted

both 0.20 and 0.25 M phosphate-NaCl

concentrate

was not separa-

from a buffer con-

and 0.8 M NaCl, pH 6.91 was added to and mixed

II, VII, Xl were eluted

received

plasmapheresis.

&as prepared

A-50 R equilibrated

(all phosphate-NaCl

were

or after a double

from individuals

25 ml of DEAE-Sephadex NaCl

of the donors

with

for l/2 h; the gel was

and washed buffers.

with 600 mi of F IX (and Factors

50 ml of 1.0 M phosphate-?iaCi. The

5-6 mg of protein/ml

and 5-8 units of

F IX/ml. Purification

with A1(OH13

gel

was carried

Swart et al. (71 at O'C. F IX concentrate volymes

of distilled

each mg of protein by adding

water.

and mixed

a gel volume

0.3 ml Al(OH13

out as described was diluted

of 0.3 M phosphate

with three

22.1 was pipetted

for 5 min. Elution

by

for

was performed

buffer,

pH 6.0, mixing

FKLTIPLE

t'ol.;,~o.l

iiata

r?~rs

olustSS

\.*;SrS

FCClZd

3;ai;_ __ $-z

ChT-!Ifil~tCl--

z;

3:

_i

-7

_-.Y

FOR%

OF FACTOR

_,3 r

p^31

2nd

*

CT

frCzSn

prCCpS.S?_:

cr isoelectric

E’aa”y

_jl

CL

J 2 per "=.._ ct

tr.3::

IX

a”+_ivity, __

+‘_r”, +“er

T;i-_ : y r: r f x _” -

“4

fC=!,si"g.

CE.GE-Sephadex ChronatograpSv. 2C ml CEAE-Se~?a:ex gel ec,uili:ra-y 2.2 t-_n c e n L* r a te ,_,~F _, __ in 3.96 ?, zitrafe, pP 7.0, was atided c, [ 2 t .>'At T:H

13CC

ucits

,Gft;r

7.5,.

of

gent?e

F

I;()

dissclvsd

Fixirg

For

in

l/2

h

:zc

5:s

7-1 gel

:.'I3 :yss

F

citr3-j

p;lcko:2

ink=

3

and e:uted ~.+itha linear citrate g:-aziant, ,;b 7.3, ,usic' cz l_i?n = 6 113OC iiltrograd R gradient mixer. ihe protein ‘dZS ret----an L ,< _v_i ed by Cvicorcf II (LKE). The citrate measured forc

cf each fracticr

F':eter(Wiss.-Tec~n.Werkst~tter,

ty a Conductivity

Kailheim)

content

cali'bratec with a series

2,?42

buffers

made of the

wss

used

5~

the gradient. The gel was prepared

Hytiroxyapatite chromatography. to Tiselius buffer,

et al. (61 and equilibrated

pH 6.6. The mclarity

about 2 mg per milliiitre gradient

lJ/ith5 mM phosphate

of the charge

ed t 0 about 0.1 M with distilled

according

water.

soltition was adjust-

The protein

of gel. Chromatography

elut ion was done with phosphate

load was

with a linear

suffer,

pP 6.8, and

LKE equipment. Isoelectric

focusing

was carried

(110 ml) using ampholytes The sample

containing

hours against against followed

7-17 mg of protein

solution.

with regard

buffer,

was dialyzed

pH 7.0, and for two hours

The manufacturer's

for column

for twc

and sample

instructions

leading,

pump at the rate of 33 ml/h.

were allowed

to reach room temperature

with Beckman

Zeromatic

Factor

IX activity

cephalin-kaolin

and/or

Findip

measurements.

system

1-3 ml fractions

555. pH meters.

One-stage

the study

with an

and the pH was measured

using haemophilia

strate was used throughout

WPZ

and focused

for 72-69 hours at 560 V at 3'C. The column was emptied LK6 peristaltic

8100-l

pH 3-5, 4-6 and 5-7, 2 ml of each.

5 mM phosphate

ampholyte

out with an LK6 column

assay with the

6 plasma

as the sub-

(9).

RESULTS Pooled Figures

plasma

Factor

IX.

1 and 2 demonstrate

the hetercgeneity

of the F IX con-

Ji;i”cF,3---

c

2)

-5’

There there three

nenrs. t

(Fi-

_,krag,hy

he+arogene;us. U..,&

:s 3

the concentration absarbed

at

=

I;(

a,~!--~i~it

-3:n



ccnponents,

3

which

components

c,rpg-

3~~earzd

(Fig. I]

chrzrcat~graphy

were eluted

and the main component

0.100 and G.115 M, and the third component

betwaen

,*

sever‘3

was critirq1. ^_i.i, F IX activity

K and the first

0.08 and '3.100 Fi. The second

5::

eaok

gE,&E-Sephadex

In

cf citrate

L1.08

_., Y appears:

was

was between eluted

between

0.115

and 0.130 P-1. A steeper Several

gradient

fractions

concentrations eluted

was needed

with

F IX activities

of 0.100

at 0.175

- 0.240

- 0.175

M. Secondly

molarity

(Fig. 21.

were eluted at phosphate

M, and finally

0.24 - 0.26 M. The elution hydroxyapatite

in hydroxyapatite

a double

peak

was

cne peak in the range

depended

on the lot of

gel used.

The F IX activities chromatography

in the above-mentioned

hydroxyapatite

were pooled

and designated

pools I, II and III.

These pools were subjected

to isoelectric

focusing

(Figs. 3a

and 351. Isoelectric

focusing.

Pool I resolved

in isoelectric

with the following

focusing

pIs and parts

into three subcomponents

calculated

in percentages:

p1 3.98, 30%; p1 4.16, 61% and p1 4.50, 9%. Pooi

II seemed

to be even more heterogeneous.

nents were separated,

three of them constituted

although

cent, and four small subcomponents pIs and parts

in percentages

Seven subcompo-

together

25 per cent. The

were p1 3.85, 24%; p1 4.12, 6.5%;pI

4 .42, 22%; p1 5.35, 5.5%; p1 5.80, 7% and p1 Pool III consisted 4.10,

75 per

of four subcomponents:

4.5%.

6.C4,

p1 3.85,

15.5%; p1

16%; p1 4.36, 48% and p1 4.83, 20.5%.

Individual

Factor

Donor No. 1. nations

6540 ml of plasma

during

about

F IX concentrate A1(OH13

IX

was prepared

gel adsorption.

to hydroxyapatite activity

four years.

was found

was collected

from several

do-

The plasma was stored at -25'C.

with DEAE-Sephadex

Part of the A1(OH13eluate

gel chromatography;

followed

was subjected

one peak containing

(Fig. 41. After focusing

by

this material,

F IX a

N-ELTIPLE FOR%

63~11

OF FACTOR

10 20 Fraction NP

30

IOj

IX

40

FIG. 1 DEAE-Sephadex chromatography of pooled Factor IX from about 600 persons. F IX concentrate containing about 1000 units of F IX was adjusted in 0.08 M citrate buffer, pH 7.0, and absorbed with 20 ml of DEAE-Sephadex equilibrated in the same buffer. The gel was then transferred to an empty column and the column was eluted with a linear citrate gradient formed by 250 ml each of 0.08 M and 0.15 M buffers, pk 7.0. Fractions (12.5 ml1 were Factor IX activity -x collected at a flow rate of 30 ml/h -xx adsorbance at 280 nm. Phosphate

200 50 100 150 Fraction NO FIG. 2 gel chromatography of pooled F IX (from about 0

Hydroxyapatite 3000 persons). gel and 5 ml of the F IX concentrate was adsorbed with Al(CH) eluant was diluted to 15 ml with water. T?i s sample contained 200 mg of protein and was adsorbed in the c01umr~ (2 x 10 cm1 and eluted with a linear phosphate gradient formed by 300 ml each of 0.1 M and 0.5 M phosphate buffers, pH 6.8. The column was run at +4'C with a flow rate of 4 ml/h and 190 fractions of about 2 ml were collected. The pools which were further run in isoelectric focusing are indicated by arrows on the abscissa. Pool I contains fractions 40-99 (122 ml), Pool II fractions loo-135 (61 ml1 and Pool III fractions 136-161: (57 ml!. x absorbance at 280 nm. Factor IX x -

Dooi

c

L.L2

;c1;;;< L.90

L.12 hi

10

5.90 6.04

20

Fraction

Fig.

3a.

Pool

I,

Isoelectric in

the

LO

NO

FIG.

hydroxyapatite

30

FIG.

3a focusing

gel chromatogram middle Pool II

of

Pools

described and at the

30

I-111 in

obtained Fig.

bottom

Relative F IX activities of different Fig. 3b. fractions calculated from activity distribution Each bar represent one isoelectric peak and its aoscissa is determined by the isoelectric point pT 2 respectively.

2.

Pool

in

the

ijn the

top,

III.

isoelectric in Fig. 3a. position on (the actual

the

l-01 .;,50.1

X-VLTIPLE

0

20

FOR%

OF FACTOR

40 60 Fraction NQ FIG.

107

IS

80

100

4

Hydroxyapatite gel chromatography of donor P.o 1. The column (2 x IO cm) was run at +4’C with a flo;, IO ml/h. 12 ml of F IX concentrate The sample wzs adsorption diluted witi24 ml of water. It contair,ed protein. The phosphate gradient was formed by 0.1 buffers, pH 6.0. 106 fractions of about 4 mi were to isoelectric Fractions 38-45 I32 ml1 were subjected

-

F IX

activity

-

x -

x absorbance

at

280

rate of after A!(Ck!13 106 mg of V and 0.5 M collected.

focusing.

nm.

Isoelectric focusing of fractions 38-45 obtained in hydroxyapatite chromatography of donor Ko I,

Fraction NQ

Si?ile

i

-

.-.__

:;c.

33nzr ‘“,j

I

ps3<

-

2.

-.

-

-

--

_ -25

r-=r: _

3:35--3

‘ys LEA,E-Sepka”sx

t

Conors N0 .

3

3

and

,?lasmas

4.

repea

lad and

isoelectric

pH

each

one

respectively. was

_

4.55

in

they

achieved;the

b

* , i ,?. , -.i;,l-i

doucle

were pis

rbtained.

?.:o.

(Fig.

or

mixed peak

mixed

together

4.13

and

of

4 NB~E

A part

of

cis a

4.42

5). conor

purifisd them

with

was

together. with

;~a+

This

focusing

single

were

25r:-a:egr33i;z

alas-apheresis

donor

alone a

3

:y-es”e;

:.:a5

an?

:

:+.,a~

adsorpticn.

as

5).

isceJ.e,ctris

cf

either

focused

::i,. ~~3s--~~+,~“~s-:s

peal:

from

Al(GHI3

k’hen

68

._*ri -_,

donations

focusing

alone,

c_s,i,_3

-.j-,

3

;A, single

at

CEAE-Sephadex

them

;;?I.

focuseri

ano

__,_a:ri

c-

3 3

a:p.SC?-h”i AC__

in hydrc;..yapa:iza material

8‘

run

When 4.15

(Fig.

run

and

separation

in

4.43

between

7).

4.55

T

I

i,

g24 f /

i

FIG. (Fig. i?jo.

(Fig. 4

61 2.

The

71

purified

Isoelectric sample

Isoelectric by

was

6

FIG. focusing

of

the

purified

by

DEAE-Sephadex

focusing

of

the

DEA E-Sephadex

and

Al(OH13.

F

IX

mixture

7

concentrate and

of

of

donor

Al(OH13.

samples

3

and

i-01 .;,?;0.1

present

The

3 pool

WLTIPLE

froc

matzgr.aphy. There elution 7-q / Y

patterns

3ctivity

apatite nen:s.

both

suggest The

focusing,

steps.

of pooled

cept that pooled ly improbable

from enzymatic F IX

was

ortained further

partly

showed

were

used during

chrobut the

splitting.

compo-

in hy-

the purification

treated

degrada-

samples

and

in the same way, ex-

focusing

Similarly,

during

heterogeneity

plasma,

F IX forms appe3ring

and isoelectric

least

focusing.

as the individual

plasma were

at

in hydrcxy-

homogeneity

plasma was cryo supernatant

observed

intc se-

that some proteolytic

However,

in

overlapping

and in isoelectris

that the multiple

chromatographies

activity

hydroxyapatite

showed

studied

possible

tion may have occurred.

IX

main cc?ponents,

but contained

inhibitors

It is therefore

the samples

ani

grocps

I-III)

chromatography

?; o enzyme

nziin

(Pool

The four individuals

drcxyapatite

Factcr

it is possi'sle *:y~t there are three

chromatography

iO9

IS

can Se sep3rated

DEAE-Seohadex

are three distinct

peaks.

in isoelectric

that

number of persons by

veral components

OF FACTOR

derrznstrate

results

a zrsat

FORYS

it is highboth in

could derive

no indication

the purification

merely

of activated

steps and isoelectric

focusing. It seems that hydroxyapatite for the separation

chromatography

of components

of pooled

is very suitable

F IX. Although

the

flow rate of the gel is very slow, F IX seems

to be very sta-

bile in these runs, and the expectable

were obtained

from the chromatographic

runs.

yields

(to be published).

shown by Hjerten

that for serum proteins

tion

isoelectric

between

the

points

order of their emergence with

phosphate

gradient

and the phenomenon electric

patterns

ween OEAE-Sephadex

(101.

derived

This seems

clearly

that there

is

no

proteins

correla-

and the

columns

eluted

to apply also to

from a comparison

from Pools

chromatography

3 study of this point

the

from hydroxyapatite

emerges

It can be assumed

of

there

It has been

F IX

of the iso-

I-III.

is a better and isoelectric

relationship focusing,

betand

is in progress.

In isoelectric focusing relatively few fractions were collected from each of the runs. Therefore, the accuracy of the

is_=e;~c-“‘.-

__

‘_C_

;I:.

_J

t--.-

“‘-e

-1

-?-

.‘&_

,.L2

c+r

;I7

+

lZ*2L)

-

suggest

units,

such

and

:-.:_

either

as

the

sialic

The

iscelectric

5.04,

but

the

tric

points

of

F IX

cf

individuals

and

within

with

the

F

relatively

true

hydrate

existence

CT

‘=“‘“;” __i

3

_i;h-=

L

2.35

__

-I-,

3z,rzx1-3_L_

of

pooled

cc,mponents

.1/+

- _ _

I -

_

==-

____srzs

__

,_L_ _,_airaz.

_ -.-. _=

csficiency

F

IX

of

focus

vary

T’: -- = rsceatics

;i;bliSk_ad

F

(11).

Correspondingly,

IX

_’ C.35

were these

between

between

other

studied

has

been

shown

carbohydrate of

human

due

5.1

d3ts

fcund

on

_

cV arc

tkS

fit

4.5.

pIs

of

4. ‘3

those

3.e;

f;oelec-

the between

values

IX.

The

to

phosphate

nature

of

amino

acids

Either

of

these

two

be

a

-

4 .ES,

obtained

(121

in

sialic

acid

the

and

cr

polypeptide

reasons

may

be

a is

most

glycoproteins

content

of

carbo-

and

galactose

!or

the

difference

In

chain

the

same

of

the

to

eizn

the

hetercgeneity

residues1 in

glycoprctein

variation

especially

of

to content

F

either

moieties,

content

i

FlZSTt?.

IX

generally

-

bjith

limits

high

probably

the

human

pcoled

Scvine

is

well

the

__-_-

acid.

main

CGrI-elatE!S

_

milltinle:)

ooints

This

the

icr

--“-=“-q

-‘31<

-__,

___er

;=” Lnl ‘ts

2.33

might

__

s,--_”

.-_

‘J”_,x.

-.m=qnr’

_

cause

in the

(13,14,?5,‘lE1. of

the

observed

heterogeneity. The plasma and

became

es

of

apparent

therefore

rather may

indications

the

laborious be

to

for

the

individuai The

More these

simple

F

of IX

samples reason

polymorphism

resolve.

needed

heterogeneity

during

ways.

genetic

the

and

methods

in

heterogeneity

would of

the

require

detect

pooled

precesses,

processed

the

this

in

purification

were for

F IX

ing

the

sane,

of family

F

studi-

var iants

the

studies.

ACKNOWLEDGEMENTS The

skil-Jl

Mrs

Maila

due

to

kind

Dr.

interest

technical !L’ummelin G.

is

Myllyla, and

assistance

of

gratefully

acknowledged

MD and

criticism.

Dr.

Miss

Ulla

Pirkko

Hamberg,

Hiitunen and

thanks

PhO

fcr

IX

and are their

are

?-cl.

w_*LTIPLE

-, ,x0.1

FOR_%

OF

FACTOR

i 11

IX

REFE.RExCES 1.

?;EAL, li.R., TAYLOE, D.T. Jr., CEDERBATJ?~ Detection of genetic variants of H.R.: immunosorbenx technique. Brit.J.Haemat.

2.

DENSOS, k.k-;.E.: Editorial: Diath.Haemorrh. Thrombos. B.

3.

LESTER, LexreLs normal -2h:16S,

, X.1. and ROBERTS, haemophilia B wir;h an 35:63, 1973. L

>loLecular s-ariants (Stuttg.) 3:317,

R.H., ELSTON, R.C. and GRMA>l, J.B.: Factors IX and X in of blood clotting Possible genetic pal)-morphisms. men: 19;3.

a

of

haemophilia 19;3.

i'ariations in population of Xmer.J.Hum.Genet.

G.

VEI,TCX?IP, J.J., YUYO, O., MOTULSKY, A.G. and FRaSER, G.R.: Blood coagulation Factors I, II, V, 17.1, VIII, IX, X, XI and XII in twins. Human Heredity &?:103, 1972.

5.

SUO>IELA, H. : Preparation of IVth Int.Cong.Thromb.Haemostasis,

6.

SUOFIELA, treatment

e I.

H. and NYLLYLA, of haemophilia

a

tlighly purified human Factor p. l%O, Vienna 1973.

G.: A 5'actor IX concentrate B. Duodecim 1971. -87:31,

for

IX.

the

SWART, A.C.W., BLOYS-VAN TRESLONG-DE GROOT, KLAASSEN, B.H.>l., C.H.F. and HEMKER, H.C.: The adsorption of blood coagulation Factors II, VII, IX and X from human plasma to aluminium hydroxide. Thromb.Diath.Haemorrh. 3:!190, 1972.

8.

TISELIUS, A., phy on calcium 1956.

9.

HARDISTY, R.N. and MACPHERSON, Janet C.: VIII (Antihaemophilic globulin) assay and and capillary plasma. Thromb.Diath.Iiaemorrh.

HJERTEN, S. and LEVIS, 0.: Protein chromatographosphate columns. Arch.Biochem.Biophys. %:132,

A one-stage its

Factor use on venous 1:213,1962.

3.: Calcium 10 * HJERTEN, phosphate chromatography of normal human serum and of electrophoretically isolated serum proteins. Biochim.Biophys.Acta 31~216, 1959. 11.

SUDHISH, C. and PECHET, L.: The separation of clotting factors. Purification of human Factor IX by isoelectric focusing. II. Biochim.Biophys.Acta 328:456, 1973.

12.

FUJIKAWA, K., DAVIE, E.W.: IX (Christmas

13.

MOSHER, gen and

14,

SIEFRING, G.E. Jr. and CASTELLISO, F.J.: The role of sialic acid in the determination of distinct properties of the isozymes 1974. of rabbi3 plasminogen, J.Bil)l.Chem. 2&9:7742,

THONPSON, Isolation Factor).

D.F. and fibrin.

A.R., LEGAZ, ?I.E., NEYER, R.G. and characterization of bovine Biochemistry 1973. -12:4938,

BLOUT, E.R.: J.Biol.Chem.

Heterogeneity of 248:6896, 1973.

bovine

and Factor

fibrino-

15.

16.

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