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鮭卵に見られる核外の Feulgen 陽生物質について

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(1)Title. 鮭卵に見られる核外の Feulgen 陽生物質について. Author(s). 西田, 秀夫. Citation. 北海道学芸大学紀要. 第二部. B, 生物学,地学,農学編, 15(2): 1-4. Issue Date. 1965-01. URL. http://s-ir.sap.hokkyodai.ac.jp/dspace/handle/123456789/5793. Rights. Hokkaido University of Education.

(2) . l Vo ,2 ,15 , No. IB do Gakuge i Se i i i Uni lof Hokka t s ) Journa r ve ct on l y(. J anua r yl965. ive Substance i t 0n the Feulgen Pos Extranuclearly Detected i n the Chum Salmon Egg* Hideo N1 sHIDA log i Bi o caI Laboratory,lwamizawa Branch, Hokkaido Gakuge i i Uni ty rs ve lgen 陽 生 物 質 に つ い て 西 田 秀 夫 : 鮭 卵 に 見 ら れ る 核 外 の Feu. A certain number of biochemi tudi therto been es have hi cal s. made leading to the. table in animal eggs i ion that a large quant ty of reserved D NA are detec conclus , and ly detectedintheamph ib i ly cytoplasmic DNA wascytochemi cal an ovccytes by Brachet recent ion wi 2 i i 1 th such a subj SHIDA( ) carr ed out a cytochemical ect ).工n connect er ( and Quert , NI. l fuchs in i thod (CF工 tudy, employing c ),on the early development ) (HAMAZAKI s odine me arbo lmon eggs albaum), on the other hand, HAMAZAK・ has of chum s a , 0れco物γれ物”s 彰ね (頓′ ives in var ivat ious idered as DNA der ic subs been detected the ketoenol i tances wh ch are cons. i 3 t was reported k )i s renewal v indsof animal materials by hi s CF1 method, and in hi ew ( ine s ike the rout taln・ng method i s a kind of histochemical reaction. that CF工 method unl The present reporti s to reexamine with recent findings that there exists extranuclearly. lowing ivesubs i t Feulgen pos tanceinthechum salmon egg sproposition is bas ed on thefol , Thi lons ervat obs ,. Me劫頑.ー 工n the Present. iment i ixat exper s (Cr ) (HAMAzAK1 ) were used, ve , KEG f , Hg. f i i i s was carried out atthree thod wasused in the mod edform:the hydrol ys and Feulgen me in water), for the purpose of demonstrating the th 1 N HC1 ( or four minuteぎ degree wi ’ f depo lymer ing to l i i ion i 4 ives ( ivat DNA der s index ( chikawa cat zed DNA). Accord ) ofident ives ivat ti stence of ts der s regarded as an evidence for the exi on the D NA and i ,i ly detected in only leos ion pos ide that the Feulgen react t deoxyr ibonuc tance i s actual 1 ・ve subs. ixat i th KEG f );onthe other hand, it is regarded as an ve (Hg the preparation treated wi f DNA and monodeoxyribonucleotide that the pos t tance ce o ・ ・ve subs I evidence f orthe existe, lys ive (Cr ides ixat i th KEG f i ). Be s s in s also detected in the specimen treated wi , the hydro , de ree 5o as to di ix m・ inutes ingui t ion was Ferformed at s s sh between DNA and the react g. lyzed or which had been pre‐treated with 1 ide ives i ivat ts der s ,S , which had not been hydro o.25 per cent baryta water served as controls , ion s tage, in 尺g s覆お. 一 From the very formation of the blastodisc to later segmentat ;f ixat ive (Hg t tance wa th ), the Feulgen pos 1 1ve subs s observed the specimens treated wi , (EK l l as beneath the b l i tod ),and then it took a sc as we throughout the blastodi as s c (Fig ・1. l l fb i tod ameter, in the cytoP1asm o s e in the latter it as c ar form, about l口 in di granul , whi * Ded ko l kawace l i i t s sexagene thday i suhi ebr r r t chi a ng hi ed t o prof yb c a . , At. (ヱ ).

(3) . . on the Feu l i i l l lmon Egg t t t t ve Subs e c anc e Ext r am1 c e a r edi n the Chum Sa gen Pos y De . did not take a g l lo idal (Fi ranulous form, but was rather co ). The Feulgen positive g .2 tance wa i subs i ixat s not distinctin thespecimen treated wi th KEG f ). Feulgen negat ve ve (Cr. l des whi ts were obtained by the s lyzed, or whi i resul ch had been ch had remained unhydro hydro lyzed wi lg i l lo ix minute in ab da l i l i th s ty of thes t s (Fi ). The s e granul ar or co a ,3 ial ly r mater s was great th o,25 per cent baryt educed by a pre‐treatment wi ). a water (Fi g .4. ・ 一 - - -- ‐ ‐ . - . - -● “ - - …“ “ 一 - - ・一. r デ ー. . . . . . 一 一 ー一 ‐. ・ ‐ ‐ ー ー ・ 一 ー▲ ‐ ‐ 一 一 一 ー ー「 ー ー ・ ▼ ー 『 . t ^ 、. . . ー ー ▼ ′ー , . . . . べ き き Y g き 話 瀬 i さ 三 ー 一 ; デ一 際 . Fig ,1.. Se l i i but i l t t t todi s ct on shows a di r on of Feu ・ ・ ve subs n the b s b s ancei a c( gen pos ) and l bene l l l t t t sin the b s s sform of gr e s ・ vesub ance t s r e ath the ake anu a odi c e I gen po . Feu , whi f d d bene i k k h i l i f t t t ththe e sn e sa sa t e e es o o o r m a n r a r n o r o u c so a a r e a n a o n ・ p y g p g g g , , da l l lsub i l ls l t ‐ s th thr t s hydro co oi e s; x150 edby a rows ee minut age anceindi cat r ce ys , ,1 , wi. .. Fig .2,. . 撃 、 駁. l . Ba i i l k( t th y s t s s s ) e ofthe b a od c; Feu . l veaggr egat ・ ons nd c at ed by a r rows o gen po y ,i , wi l b i i t ) s s enot ath the b a od c( r ced bene a . x 600 .. (2).

(4) . . da deo Ni Hi shi ive subs i tance i t ln these stages iti s observed not only in the s noticed that the Feulgen pos. fbl i tod s cytoplasm o c but also beneath blastodisc where is composed of aggregations of as inct ln lk globules i ion to the fact that the one in the latter i s very much dist t yo ,in add i opt cal appearance ・. ly erved not on i lthe b tance was obs l t Frol las i ・ve subs tu a stage on wards,the Feulgen pos l l in the cytoplasm of b toderm but a so in and beneath the periblast. Such substance took as loidal l l l ib t took granula士 or co f granule in the b l t ei as toderm and the per a form o as , whi ・. / 、. . ‘. Fig .3.. -. l l i ix m1 i i th hydr si s sf e n Feu gen ion showsa p・ t o or s nut Se r r ed out wi on c a epa r a y t c lmo l tr t s i t sbeen a emoved s ves ubs ance ha ・ ー on e a , r ct gen po , x 150 . Feu. 、. .. ニ 二 ミ 二 :. .. Fig .4.. ・ ′ ~●≦ ・ ′′ ′. 1 Pr f pr t scont tment wi th ba e S; × 150 t a wa ra e r ro epa r a E ナ ÷ yt r at l on 。 ,.

(5) . on the Feu l i i r l l lmon Egg t t s t y De ve Subs t e r anc e EX anuc a e ct edi n the Chum Sa gen Po .. form beneath the per l ib t as , where is composed of aggregations of yolk globules as that l d bneath the b i h i t t aso s c n e former stages, Results of the control experiments were as s ame fformer stages・ as that o DZ t sc”s sのれ l .ve . - As above mentioned, Brachet and Quertier detected the Feu1gen pos ialin the cytoP1asm o f ovocytes in rγ””γ錫s, in this case the hydrolys i mater i s was carr ed. l outin I N HC1in absolute a ixat ive, cohol on the preparation treated by acetic Zenker f The KEG f ixat ive(Hg f f i )hasthes ame reagents as Zenker fixative, butis d a, erentin formul 6percent ive s id( thatis, more of acetic ac l 3per cent imat )andl ) e s s of corros ub e( , However, i igni f i t would be s i d h i h . t h b l . tu es t at t e a ie Feu gen pos i ive subs can n t ese two s t tance i l l i (mater ) be ab i d hydrolys a tant to a i e to preserve in a form res s c s by the employment of Z k f d f d i i i i A d t l id hydrolys l or about three i mo e en er xa ve. s sin absolute al n a o, the ac coho f hydrolys mInuteg degree o i s would be particularly appropriate for the Purpose of proving l i ides thel fthe present control exFeriment, to e Feu1gen pos・t・ve substance. Bes ab , as a resul i ti i ive subs s reasonable to as t tance detected in chum salmon eggs sume that the Feulgen pos would be DNA derivatives, moreover, it would be deoxyibonucleoside. unfortunately, no chemi cal study on the present species egg.. However, there i s ,. As des ibed by Brachet( 5 c r ch existsin the anin ) : 1 al eggsi s , the depolymerized DNA whi ivat ivesresul regarded not as DNA der f DNA,but as precursors of t ted f 1 1on o rom a decompos. l molecular weight for DNA synthes i smal f Har s so, according to the revi ew o tman . And al 6 iochemi and Buchanan( ides ) cal experiments have presented evidence that deoxyribonucleos ,b l i l i i f DNA, These findings suggest that the Feulgen are ab e to be ut so zed forthe synthes i ive subs t ly develoFmental s tance detec「ed in thechum salmon eggs dur ing ear pos tages can. ly ut l be d i i i l rect zed as a precursor for nuc ear DNA synthesis. At last,concerning the or1g1n ofthe present substance, it/might be expected that the substance is transferred to egg by the resul t of polyspermy ; bu t , under the view of function of the micropyle, such. ld be f phenomenon wou ew. REFBRENCES 1, Br i ldet fcyt i l t i bonuc l i ache t d (DNA) in e r s i ochemi ca e c on o op l ni c deoxy・ a e ca c , ,J . and Quert ,J , Cyt h i b i E h IC l I iment 1963 amp s an ovocyt e ) s r a e Re ea r c 32 , xpe . ,410‐413 ( 2. Ni da ls l lmon egg shi ido Gakuge t i Uni ochemi c a udy onthe deve opmentofchum s a v , H. , Cyt . Hokka . ,J 12 2B 1 5 5 9 1 6 - ( 1 ) , , . 3, Hama l i l l z aki t i oeno csub s e sand Ket anc t tochem. 16 1963 oeno s cgr anu e s ) a Hi , Y, , on the ket , Ac . ,1‐27 ( kawa 4. l t chi s ochemi r J 1953 en )( s ). apane e y , 0. , Cyt , Honda Syot , Tokyo( fdeve 5, Br l t t a che s 1960) r opment ebiochemi rgamon pr e$, London ( yo , ,J , Th , Pe , 6, Ha l tman i i ds i r di imi l desynthe an e i i cac s ne s (Nuc ), Ann ne eot s s . C. ,S . M. ,and Buchan ,J , Nuc ,pur ,pyr . h Rev B i e 2 8 3 6 5 9 5 4 0 1 1 ( 9 ‐ ). , oc m. ,.

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