Title: B???????????????
1???? ????? B??????????????? Humoral Immune
Responses
2???????? Humoral Immune Response
- (?)???????????,?????????
- ??????????????
- (?)????
- ??????B1, B2
- ???????Th????
- (?)???????????????????
3- (?)B?????????
- ?????
- ??????FDC??????????,
- ?????????,??B???
-
-
4??? B???TD???????
- ? B???TD?????
- BCR??????????B?????
- ? ????????Iga?Igß?????
- Iga?Igß?????????(????1)
5BCR??? BCR complex
6B?????????? Two-signal model for B cell
activation
??Th ?????
7- (?)B???????????
- ???B????,CDl9?CD21?CD81(TAPA?1)?CD225(Le
u?13)???????B???????????? - (?)BCR???????????
- BCR??????B???????T??????????????
8??Th???B??????????
- (?)Th???B??????????????????(TD)??,???????????????T
h????? - (?)T??????????T????????
9Th????B?? Th cells help to activate B cells
????
CD40
CD40L
BCR
B
Th
TCR
MHCII
????
10??B?????????????
- ??B???????????????Ig????,?????????
- ?????(activation) ,
- ??(proliferation),
- ????(terminal differentiaion).
11TD ? ? ? ? ? ? ? ? ? ? ? ? ? The Process of
Humoral Responses Induced by TD Antigen
Th ???????
Th
Bm
B7
CD28
Th
Th
CD4
???
MHC-II TCR
ICAM LFA-1
APC
??????
B
Th
CD40L CD40
BCR
??
B ????
12??B????????????
- ????????T????????B??????????,????,??????????????
??? -
?????? -
????FDC??
13? ? ? ?
??????
????
???????? ??MØ?FDC ????????
??????
B?? ??
??
????
??
???
14??B????????????
- ?????????B?????????B????????T?????,B???????,??????
????????????????????????Ig??????B????????
15- (?)???????
- V(D)?J????????????,???????????V(D)J????,????,?????
??????????????????? - ?????????V (D)J????????B????????????????
16- (?)?????????Ig?????
- 1g?????????????????????????????????????
????B??.?????????,???????Th???????,???????????????
????
17 B???????????? IgV????????????? IgV?????????????
?? ???????????BCR?B?? ????BCR?B???????? ???????
??????????
18- (?)Ig?????
- B???IgV???????,???????????IgV??,?Ig
C??(?????)????????????????????????????
19 B ? ? ? ? ? ? ? ? ? ? ?
20- (?)??B?????
- ??????????B??,?????????,????????????????
B???????????????B?????Ig,????????????????,????????
?Ig?
21???B?? Memory B cells
- ??
- Bm?????????????,?????????????????IgG
- ???????,??Th??
- ?????????????
22??? B???TI???????
- ?????Ab????
- ???Bm???
- 1 ?TI???TD?????
23B ? ? ? ? ? ?
CD28
IL-5
IgM
B7-2
?? (C3b,C4b )
FcmR
IL-2
CD40
CD40-L
CD23
CD32
IgE
BCR
IgG
??
CD21
IL-4
?? (C3bi )
24TI???TD??TI Antigen and TD Antigen
- TI ?????Th???????
- TI-1????,???BCR??????
- ??
- TI-2??????????B????,??BCR???
- TD???????,??Th?????
25 TI ? TD ? ?
TI-1 ??
TD ??
CD4
2
1
1
2
CD40/CD40L
B2 ??
B1 ??
Th??
26TI-1 ? TI-2 ? ?
TI-1 ??
TI-2 ??
LPS
?????
LPS ??
????
????
B ??
272 ???Bm???
Plasma cells
Ig
sIg
Ig
Bm
28TD ? ? ? ? ? ? ? ? ? ? ? ? ? The Process of
Humoral Responses Induced by TD Antigen
Th ???????
Th
Bm
B7
CD28
Th
Th
CD4
???
MHC-II TCR
ICAM LFA-1
APC
??????
B
Th
CD40L CD40
BCR
??
B ????
29??? ?????????Chracteristics of Humoral
Responses
- 1???????(Primary Humoral Response)
- ???????????TD???,?????
- ?????????
- ?? ???6-10?
- ????????IgM,???IgG??
- ????????,??????
30- 2???????(Secondary Humoral Response )
- ??????????????????? ??,????????????????
- ?? ???4-5?
- ???IgG??
- ????
- ?????,??????
31??????????? Primary and Secondary Humoral
Response
????
????
100000 10000 1000 100 10 1 0
???????????(Log)
????
????
IgG
IgM
0 7 14 21 28 35
42
? ?
32 ? ? ? ? ? ? ? ? ? ? ?
?C??
A B C D E
?C??
Bm??
Bm??
33???? C ?????????
??????
???? C ?????????
???? B ?????
? ?
??C ??B
??C??
??
34TI ???????????
????
????
100000 10000 1000 100 10
1 0
???????????(Log)
IgM
0 7 14
21 28 35
42
? ?
35