• 検索結果がありません。

Identification of a protein involved in the specific interaction between spermatogenic and Sertoli cells of the rat

N/A
N/A
Protected

Academic year: 2021

シェア "Identification of a protein involved in the specific interaction between spermatogenic and Sertoli cells of the rat"

Copied!
5
0
0

読み込み中.... (全文を見る)

全文

(1)

Identification of a protein involved in the specific interaction between spermatogenic and Sertoli cells of the rat

著者 前田 智司

著者別名 Maeda, T.

journal or

publication title

博士学位論文要旨 論文内容の要旨および論文審査 結果の要旨/金沢大学大学院自然科学研究科

volume 平成11年6月

page range 1‑4

year 1999‑06‑01

URL http://hdl.handle.net/2297/16169

(2)

前田智司 氏名

生年月日 本籍 学位の種類 学位記番号 学位授与の日付 学位授与の要件

東京都 博士(薬学)

博甲第260号 平成10年3月31日

課程博士(学位規則第4条第1項)

Identificationofaproteininvolvedinthespecific interactionbetweenspermatogenicandSertolicellsofthe rat(精子形成細胞とセルトリ細胞の特異的な接着を規定するタン パク質の同定)

(主査)中西義信

(副査)大場義樹,正宗行人,松永司,山口正晃 学位授与の題目

論文審査委員

学位論文要旨

ThemammalianspermatogenicpathwayisacomplexprocessthatinvO1vestheproliferationof

thetesticularstemcellscalledspermatogonia,themeioticdivisionofspermatogoniagivingriseto

haploidspermatids$andthemorphogenicdifferentiationofspermatidsintospermatozoaThiswhole processcontinuesformorethanfourweeksintheseminiferoustubuIesofthemammaliantestis・

ThroughoutthespermatogenlcpathwayjspermatogeniccellskeepaclosecontactwithSertolicells1

testicularsomaticcells・SertoIiceⅡshavethusbeenpresumedtopIayanimportantroleinthe spermatogenicdifferentiation,transferringmanymateriaIsandsignalstospermatogeniccelIs

AlthoughanumberofproteinswithcelladhesionactivityexistinbothspermatogenicandSertolicelIs,

itisnotcertainwhetheranyofthemaretrulyinvolvedinthespecificassociationbetweenthetwocell typeslnthisstudy,lattemptedtoidentifyaproteinresponsibleforthisassociationusingan expressioncloningmethod

1)EstablishmentofceIIadhesionassay

Whenrattesticularcellswerep「imaryco-cultured,spermatogeniccells

weremaintainedinassociationwithSertolicellsthatgrewasamonolayer、ln

ordertoidentifythemoIecule(s)responsiblefo「thespecificinteractionbetween thetwocelltypes1IestabIishedaquantitativecelladhesionassayusing spermatogenicandSertoliceI1sisolatedfromaprimaryculture・

Ineachcelladhesionassay,thenumberofspermatogeniccellsboundto

Sertolicellswasdeterminedandshownrelativetotheinputcells,takenaslOOi

ie.,thecelladheslonindex・UndertheestabIishedconditions,spermatogenic celIspreparedfroma3-dayco-cultureroutinelygaveindexesofl3~30.

(3)

2)MolecuIarcIonIngofspermatogenlccelIproteinresponsibIefor spermatogenic‐SertoIiInteractIon

ldecidedtoidentifyacelladhesIonmolecuIe(s)inspermato9eniccells

employin9anexpressioncloningmethodlfirstsoughtaculturecelllinesuitable

forthehostforcloning、Therequirementsforhostcellswereasfollowsithecells

growinsuspension,donotbindtoSertolicells,andexpresstheSV401argeT‐

antigenthatallowsapIasmidcontainingtheSV40replicationorigintorepIicate

extrachromosomaIIy・AhumanT-cell-derivedcellIineJurkatTagmetallthe requirements,showinganadhesionindexofaboutl/5ofthatwithcontrol

spermatogeniccells

AcDNAlibrarywithacomplexityof2xlO6waspreparedfromthemRNAof

spermatogeniccellsusingamammalianexpressionvectorpcDNAl/Ampthat containstheSV40replicationorigin・ThelibrarywasintroducedintoJurkatTag cellsbyelectroporation,andthecellsthatacquiredtheabiIitytobindtoSertoli

cellswereselectedinthecelladhesionassay.Aftermulti-roundofsuch functionalscreenlng1fourcDNAcloneswereeventualIyisolated

TwoofthefourcDNAclones(#78and#97)werebroughttothefinal

examinationforthebindingtoSertolicells、Todoso,theirinsertswereisolated andrecIonedwiththepHook-2vector,whichexpressedasingle-chainantibody againstthephOxhaptenandallowedseIectionofthetransfectantsthatexpress anintroducedDNAusinglatexbeadscontainingthehapten・TheinsertsofW8 and#g7cIoneswereligatedwiththevectorandtheresultingDNAwere introducedintoJurkatTagcells,andceⅡsexpressingthecDNAwerepurified、

ThesecellswereanalyzedforthebindingtoSertolicells,togetherwithJurkat Tagcellsexpressingtheemptyvector(negativecontrol)andspermatogeniccells (positivecontrol).ThecIone#g7showedasignificantbindingactivity coT1parabletothatofcontrolspermatogeniccelIswhilethecellsexpressing

clcne#78didnotbindtoSertolicells、Theseresultsindicatedthatclone#g7

wastheonewhichcodedforthespermatogenicprotemresponsibleforthe birdingofspermatogenicceIlstoSertoIicells、Thereasonforafailureof detectingtheactivitywiththeclone#78isnotclearatpresent,butitmaybe possibIethattheproteinencodedbytheclonewasnotproperlyexpressedunder thisexperimentalcondition,lwentfurthertodeterminethepropertyofthe#g7

clone-encodedprotein.

3)CharacterizatIonofceIIadhesionprotein

The#97cDNAclonecoveredaDNAregionofaboutl3kbpinlength

inCludinganopenreadingframefor243aminoacidresiduesApredicted

molecularmassoftheencodedproteinwas27kDa

-2-

(4)
(5)

参照

関連したドキュメント

GoI token passing fixed graph.. B’ham.). Interaction abstract

Keywords: homology representation, permutation module, Andre permutations, simsun permutation, tangent and Genocchi

The mGoI framework provides token machine semantics of effectful computations, namely computations with algebraic effects, in which effectful λ-terms are translated to transducers..

Standard domino tableaux have already been considered by many authors [33], [6], [34], [8], [1], but, to the best of our knowledge, the expression of the

The input specification of the process of generating db schema of one appli- cation system, supported by IIS*Case, is the union of sets of form types of a chosen application system

H ernández , Positive and free boundary solutions to singular nonlinear elliptic problems with absorption; An overview and open problems, in: Proceedings of the Variational

Keywords: Convex order ; Fréchet distribution ; Median ; Mittag-Leffler distribution ; Mittag- Leffler function ; Stable distribution ; Stochastic order.. AMS MSC 2010: Primary 60E05

Inside this class, we identify a new subclass of Liouvillian integrable systems, under suitable conditions such Liouvillian integrable systems can have at most one limit cycle, and